trachea, but like many, it was caught really late. they treated him, but they could do nothing more. they said you need a trachea from that cadaver, that line is so long, he would have died, so doctors said we're going to make you one. they made it out of the plastic, this sort of spongy, plastic, and then coated it with his own stem cells. that's the windpipe, sort of thj region. there was a tumor. that green stuff is all tumor. so that's -- as you can see, that is huge. so they built him a new one, vote coated it with his stem cells and his body accepted it, his bod,said, this is me, and his veins actually grew, the vessels actually grew into it, because his body thought it was a part of it. >> so does everybody with trachea cancer, would that be a treatment? >> it would be wonderful.